How To Fix MC671 - Activation currently locked by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 671

• Message text: Activation currently locked by user &

What causes this issue?

An activation lock is always set when an activation is started for a
single ABAP/4 Dictionary object or with the mass activating program.
This inhibit should prevent objects of different object classes from
being activated in parallel, which could cause an inconsistency in the
ABAP/4 Dictionary. The lock is automatically cancelled after the
activation. The lock initially remains active when an activation is
cancelled. It removes itself after approx. 10 minutes.

System Response

The activation request is rejected.

How to fix this error?

Repeat the activation after a few minutes.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC671 - Activation currently locked by user & ?

  The SAP error message "MC671 Activation currently locked by user &" typically occurs in the context of the Material Management (MM) or Production Planning (PP) modules when a user attempts to activate a data object (like a material master or a production order) that is currently locked by another user. This locking mechanism is in place to prevent data inconsistencies that could arise from concurrent modifications.
  
  Cause:
  
  User Lock: Another user is currently editing or has locked the data object you are trying to access.
  Session Timeout: A previous session may not have released the lock due to a timeout or an unexpected termination.
  Background Jobs: A background job may be running that is holding the lock on the data object.
  System Issues: Occasionally, system issues or bugs can lead to locks not being released properly.
  
  
  Solution:
  
  Wait and Retry: If the lock is held by another user, the simplest solution is to wait until that user